Re: Friend functions - ReadList.com

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Friend functions
\ David Sveningsson (20 Apr 2007)
. \ John Love-Jensen (20 Apr 2007)
. \ Ian Lance Taylor (20 Apr 2007)

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Subject:	Re: Friend functions
Group:	Gcc-help
From:	Ian Lance Taylor
Date:	20 Apr 2007

David Sveningsson <ext> writes:

> Hi, the following code compiles with GCC 4.0.1 and VC2005 but not GCC 4.1.1.
>
> class Foo {
> friend void friend_func();
> public:
> virtual void func();
> };
>
> void Foo::func(){
> friend_func();
> }
>
> It fails with '"friend_func" was not declared in this scope'. By also
> declaring friend_func outside of class Foo it compiles on all
> platforms but what I wonder is why this changed from GCC 4.0.x and GCC
> 4.1.x. I guess it's intentionally and not a bug.

See the description of the -ffriend-injection option.

Ian